Tuesday 23 June 2020

CaK Closeups 22nd June

cak-arriving-limb-colour

cak-close-colour

cak-departing-limb-colour

The newly configured CaK filter seems to work well with the Airylab telecentric at f28 with the 100mm Tal refractor with no obvious reflections or vignetting visible.  Sadly there is little to see on the sun at the moment.
Posted by BrierleyHillSolar at Tuesday, June 23, 2020